- Right click to exit a command while saving your work.
- Press escape to exit a command and cancelling your work.
- Some commands have clickable options directly from the help (e.g. line/polyline/zoom).
- There are object undo/redo commands that fetches previous states of
individual objects. Without touching the rest of the undo/redo stack!

Downloading StreamCAD: temporarily unavailable (an update is planned for later this evening)